Low-dimensional magnetism of spin-½ chain systems of α- and β-TeVO4: A comparative study

Autor:	O. Afanasiev, Helmuth Berger, Peter Lemmens, Vladimir M. Gnezdilov, K.-Y. Choi, Yu. G. Pashkevich, S. L. Gnatchenko, Dirk Wulferding, K. V. Lamonova
Rok vydání:	2012
Předmět:	Materials science Physics and Astronomy (miscellaneous) Ferromagnetism Magnetic structure Condensed matter physics Magnetism Chemical physics Crossover General Physics and Astronomy Crystal structure Topology (chemistry) Coordination geometry Ion
Zdroj:	Low Temperature Physics. 38:559-569
ISSN:	1090-6517 1063-777X
DOI:	10.1063/1.4734010
Popis:	We present a comparative study of the low-dimensional compounds α- and β-TeVO4. Our data clearly show that the change in the local coordination geometry of V4+ ions between α- and β-TeVO4 leads to drastic differences in their magnetic properties. Despite sharing the same crystal structure, the two compounds manifest different magnetic exchange topologies. Both compounds exhibit a transition from ferro- to anti-ferromagnetic correlations with decreasing temperature. This effect, however, is driven by different mechanisms in the two compounds. In addition, dimensional crossover is found in β-TeVO4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cd7d362eac8fec0ace04785f47797c03 https://doi.org/10.1063/1.4734010 Zobrazit plný text záznamu